Can micro ATX motherboards work for crypto mining? I've never used one before and there are few explanations about CPU and Chipset determines the amount of PCI lanes that can work, if this true? It's pretty old and only have three pcie slots, 1 16x and two 1x slot.
Any dual core processor will work with 3 graphics cards. I used old motherboards with intel processors with socket 775 and AMD with socket AM2 for 4 video cards, but they did not last long. I have had no problems with the RX 470-580 series and Nvidia 1xxx and 2xxx series, but I don't know how your motherboard will work with the latest AMD and Nvidia graphics cards. Need to check.